barbital barbion • barbitalism · · · Info · Definitions · Synonyms · Characters · · barbital · · Text Latin · · Script 8 · · Length Definitions · · · (noun) a barbiturate used as a hypnotic. Synonyms: veronal, barbitone, diethylbarbituric acid, diethylmalonylurea. · · Noun Definition 1 Synonyms · · · veronal · · Synonym 1 barbitone · · Synonym 2 diethylbarbituric acid · · Synonym 3 diethylmalonylurea · · Synonym 4 Characters · · a latin small letter a U+0061 b latin small letter b U+0062 i latin small letter i U+0069 l latin small letter l U+006C r latin small letter r U+0072 t latin small letter t U+0074